Pokémon : S5 | E62 – Playing with Fire!

Ash has chosen Pikachu to battle Harrison's Kecleon. Ash takes a moment to check his Pokédex for information, which alerts him to Kecleon's unique ability to change its body color. Soon enough Kecleon camouflages itself, making itself almost invisible besides a red zigzag on its stomach. Ash soon realizes that Kecleon hasn't moved yet, but before Pikachu can attack, Kecleon jumps into the long grass for cover. To counter this maneuver Ash orders Pikachu to listen out for Kecleon. However, Kecleon uses its Lick attack to confuse Pikachu, then tosses him aside with its tongue. Harrison orders a Psybeam, and the attack narrowly clips Pikachu as he tries to evade it. Pikachu stands up and rushes into the grass to hide. But Kecleon uses its tongue to cut down the lawn. Pikachu bides his time before grabbing a hold of Kecleon's tongue, using it as a wire to deliver a direct Thunderbolt, knocking Kecleon out. Harrison quickly recalls Kecleon.

For his second Pokémon, Harrison sends out Sneasel, the same one he captured before the tournament opened. Pikachu uses another Thunderbolt, but Sneasel dodges and lashes Pikachu with a Metal Claw to claim the round. Ash takes a second to collect Pikachu from the field before calling out Totodile. He orders a Water Gun, but Sneasel runs forward and attempts to use Metal Claw. However, Totodile Bites down on Sneasel's arm, effectively immobilizing it. Totodile performs a happy dance, knocking Sneasel into the ground in the process. After Totodile swats it away with his tail, it leaves Sneasel unable to continue.
(Source: Bulbapedia)